package com.itheima02.string;

public class StringBuilderDemo1 {
    public static void main(String[] args) {
        //StringBuilder : 可以改变的字符序列，字符串的缓冲区（提高效率）
        StringBuilder sb = new StringBuilder("aaaaabbbbbccccc");
        sb.delete(0,3); //从第0个删除，直到第3个字符。含头不含尾
        System.out.println(sb);
    }


}
